How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 5/8100.0*Average seed
Udinese 2 Lazio 1 +0.6
Juventus 2 Chievo 2 +0.1
Roma 0 Milan 0 +0.0
Week of 5/22100.0*Average seed
Lecce 2 Lazio 4 -0.2
Udinese 0 Milan 0 +0.1
Points
Chance Will Win Championship